Pre-burying and positioning construction structure for sweeping and washing water distribution holes in surface of filter tank

Abstract

The utility model discloses a filter surface sweeping water distribution hole pre-embedding positioning construction structure which comprises a prefabricated steel sheet and a surface sweeping hole shaping pipe, and the prefabricated steel sheet is provided with a reserved round hole. Net rack steel bars are bound at a V-shaped groove of the filter, a bottom frame body is erected at the bottom of the filter, bottom formworks are fully laid at the bottom of the steel bar net rack and connected with the frame body in an abutting mode, bottom extruded plates are fixed to the bottom formworks and provided with holes, lower concrete cushion blocks are installed between the bottom extruded plates and the steel bar net rack, and upper concrete cushion blocks are placed on the tops of the bottom extruded plates and the steel bar net rack. Prefabricated steel sheets are installed on the main reinforcements in the length direction of the steel bar net rack, and reserved round holes of the prefabricated steel sheets correspond to the axes of the holes of the bottom extruded sheet. The lower ends of the surface sweeping hole shaping pipes are inserted for positioning and bound with the main reinforcements, the upper formworks and the extruded sheets are fixed into a combination body, the upper ends of the surface sweeping hole shaping pipes are inserted into holes of the upper extruded sheets for positioning, the adjacent upper formworks are connected, and concrete is poured between the bottoms of the surface sweeping hole shaping pipes and the upper extruded sheets. The structure is high in construction precision and stable in fixation.

Description

Technical Field

[0001] This utility model relates to a pre-embedded positioning construction structure, specifically a pre-embedded positioning construction structure for a filter tank surface cleaning and water distribution hole. Background Technology

[0002] In water supply system construction, filter structures typically include carbon filters, sand filters, clarifiers, and ozone contact tanks. Filter surface scanning holes are located on the sand filter plates. The construction of these scanning holes is a critical challenge, requiring consideration of both ventilation and structural compatibility. Positioning often relies on manual measurement and marking using ordinary measuring tools, which is highly susceptible to human error and insufficient tool precision. Regarding formwork fabrication and installation, wooden or ordinary steel formwork is commonly used, requiring manual drilling of holes. This makes it difficult to guarantee hole position accuracy, and the gaps during splicing are relatively large. The simple fixing methods make them prone to displacement under concrete pouring pressure, leading to inaccurate scanning hole positions. When embedding pipes, the fixing methods are often simplistic, often involving simple wire binding to reinforcing bars, resulting in poor stability and easy displacement during concrete vibration. Quality inspection mainly relies on manual visual observation and simple measuring tools, which makes it difficult to comprehensively and accurately detect problems such as position deviation and aperture error. This leads to ventilation and filtration problems caused by positioning errors in traditional technologies, reducing the stability and reliability of the water supply system and affecting water supply stability and water quality. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a construction structure for pre-embedded positioning of water distribution holes for cleaning the surface of a filter bed that is easy to construct and has high precision and efficiency control.

[0004] This utility model discloses a pre-embedded positioning construction structure for surface cleaning water distribution holes in a filter tank, comprising a precast steel sheet and a surface cleaning hole shaping tube. Multiple pre-reserved circular holes are evenly opened on the precast steel sheet, with the center of each pre-reserved circular hole at least 50mm from the wide edge of the precast steel sheet. The upper and lower ends of the surface cleaning hole shaping tube are respectively inclined at 45° angles, and a mesh reinforcement is tied to the V-shaped groove in the filter tank. Along the length of the mesh reinforcement, bottom frames are installed on the front and rear sides of the bottom of the mesh reinforcement. Multiple bottom templates are fully laid between the bottom of the mesh reinforcement and the top of the frame, and adjacent bottom templates are connected by a connecting device. The bottom templates are in close contact with the top wall of the frame. A bottom extruded polystyrene board is fully laid and fixed on the bottom template. Multiple openings for the surface cleaning hole shaping tube to pass through are opened at predetermined positions according to predetermined dimensions and shapes on the bottom extruded polystyrene board. A lower concrete pad is installed between the bottom extruded polystyrene board and the mesh reinforcement. An upper concrete pad is placed on top of the mesh reinforcement.

[0005] Multiple precast steel plates are installed on the main reinforcing bars of the steel mesh near the bottom extruded polystyrene board along the length of the steel mesh. The precast steel plates are continuously arranged along the length of the steel mesh, and the axis of the reserved circular hole of the precast steel plate corresponds to the axis of the opening position on the bottom extruded polystyrene board. The lower end of the surface-scanning hole shaping tube passes through the reserved circular hole on the precast steel plate and is inserted into the opening of the bottom extruded polystyrene board to form the first point positioning. The surface-scanning hole shaping tube is tied and fixed to the main reinforcing bar of the steel mesh. The upper template is fixed to the extruded polystyrene board to form a combination. An opening is opened on the upper extruded polystyrene board for the upper part of the surface-scanning hole shaping tube to be inserted. The combination is placed on the upper concrete pad and the upper end of the surface-scanning hole shaping tube is inserted into the corresponding opening on the upper extruded polystyrene board to form the third point positioning. Adjacent upper templates are connected by a connecting device. Concrete is poured between the bottom extruded polystyrene board and the upper extruded polystyrene board.

[0006] The advantages of this utility model are:

[0007] 1. This utility model features a high-precision and stable structure: prefabricated steel sheets precisely position the formwork for each surface cleaning and water distribution hole, preventing slippage. Nylon cable ties are used to bind and fix the formwork to reinforcing bars, with both ends of the formwork treated at a 45° angle. Extruded polystyrene board is then used as a template backing, with holes drilled at corresponding positions to insert the formwork for the surface cleaning and water distribution holes, achieving three-point fixation for precise positioning and stability, effectively controlling construction accuracy.

[0008] 2. Easy demolding: The formwork has no holes, so there will be no jamming or sticking during demolding. The demolding process is easy and convenient. The lining board is made of extruded polystyrene board, which makes it easy to remove the concrete structure and further facilitates the demolding operation.

[0009] 3. Simple and quick construction: The construction process is significantly simplified and the construction cycle is shortened by using prefabricated steel sheets and surface-scanned shaped tubes, and fixing them with nylon cable ties.

[0010] 4. Saves labor: Reduces the complex positioning and adjustment work in traditional construction, thus lowering labor costs.

[0011] 5. No need for rework: The high-precision pre-embedded positioning structure avoids rework problems caused by inaccurate positioning.

[0012] 7. Excellent finished product quality: The finished product quality is excellent after construction, and the construction quality achieves 100% of the expected results.

[0013] 6. Environmental protection and energy saving: By making reasonable use of extruded polystyrene board as template backing, the material utilization rate is improved and resource waste is reduced. Attached Figure Description

[0014] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0015] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the V-shaped groove in the filter tank after the concrete is poured, based on the pre-embedded positioning construction structure of the filter tank surface cleaning water distribution hole of this utility model.

[0017] Figure 2 for Figure 1 A partial sectional view of the structure shown;

[0018] Figure 3 for Figure 2 A schematic diagram of the installation nodes for the prefabricated steel sheets and the surface-scanned shaped tubes in the structure shown.

[0019] Figure 4 yes Figure 3 A three-dimensional view of the prefabricated steel sheets in the structure shown;

[0020] Figure 5 yes Figure 3 A three-dimensional view of the surface-scanning hole shaping tube in the structure shown. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the technical solutions of this disclosure will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the technical solutions of this disclosure, but the technical solutions of this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the technical solutions of this disclosure, and not all embodiments.

[0023] As shown in the attached figure, the present invention provides a pre-embedded positioning construction structure for surface cleaning water distribution holes in a filter tank, including a precast steel sheet 6 and a surface cleaning hole shaping tube 7. Multiple reserved round holes are evenly opened on the precast steel sheet 6, and the distance from the center of each reserved round hole to the wide edge of the precast steel sheet 6 is at least 50mm.

[0024] The top and bottom ends of the surface scanning hole shaping tube are respectively angled at 45° to facilitate insertion and positioning.

[0025] A steel mesh frame 2 is tied to the V-shaped groove in the filter tank. Bottom frames 5 are installed on the front and rear sides of the bottom of the steel mesh frame 2 along its length. Multiple bottom templates 3-1 are laid between the bottom of the steel mesh frame and the top of the frame 5, and adjacent bottom templates 3-1 are connected by connecting devices (such as bolts or clamps). The bottom templates 3-1 are in close contact with the top wall of the frame 5. A bottom extruded polystyrene board 4-1 is laid and fixed on the bottom templates 3-1. Multiple openings of a predetermined size and shape are made on the bottom extruded polystyrene board 4-1 for the surface cleaning tube 7 to pass through. A lower concrete pad is installed between the bottom extruded polystyrene board 4-1 and the steel mesh frame 2; an upper concrete pad is placed on top of the steel mesh frame 2.

[0026] Along the length of the steel mesh frame 2, multiple precast steel sheets 6 are installed on the main reinforcement bars of the steel mesh frame 2 near the bottom extruded polystyrene board 4-1. The multiple precast steel sheets 6 are continuously arranged along the length of the steel mesh frame 2, and the axis of the reserved circular hole of the precast steel sheet 6 corresponds to the axis of the opening position on the bottom extruded polystyrene board 4-1. Preferably, the precast steel sheets 6 are tied and fixed to the intersection of the main reinforcement bars and transverse reinforcement bars of the steel mesh frame 2 by nylon cable ties 8.

[0027] The lower end of the surface-scanning hole shaping tube 7 passes through the reserved round hole on the precast steel sheet 6 and is inserted into the opening of the bottom extruded board 4-1 to form the first point positioning. The surface-scanning hole shaping tube 7 and the main reinforcement of the steel mesh frame 2 can be tied and fixed with nylon cable ties 8. Preferably, the surface-scanning hole shaping tube 7 is tied to the main reinforcement of the steel mesh frame 2 at the bottom 1 / 3 height to form the second point positioning, so as to prevent displacement during pouring.

[0028] The upper template 3-2 is fixed to the extruded polystyrene board 4-2 to form a combined body. An opening is provided on the upper extruded polystyrene board 4-2 for the upper insertion of the surface-scanning hole shaping tube 7. The combined body is placed on the upper concrete pad, and the upper end of the surface-scanning hole shaping tube 7 is inserted into the corresponding opening on the upper extruded polystyrene board 4-2 to form a third-point positioning. Adjacent upper templates 3-2 are connected by connecting devices (such as bolts or clamps). Concrete is poured between the bottom extruded polystyrene board 4-1 and the upper extruded polystyrene board 4-2.

[0029] The construction process for this structure is as follows:

[0030] Step 1: Fabricate a precast steel sheet 6. Multiple pre-drilled circular holes are evenly distributed on the precast steel sheet 6. The center of each pre-drilled circular hole is at least 50mm from the wide edge of the precast steel sheet 6 to ensure that the holes do not extend beyond the edge of the steel sheet, while also providing sufficient space for the subsequent installation of the surface cleaning hole shaping tube 7. The specifications of the precast steel sheet 6 can be prefabricated on-site according to the dimensions of the cleaning and water distribution holes.

[0031] Step 2: Use PVC pipe to make the surface scan hole shaping tube 7. The top and bottom ends of the surface scan hole shaping tube are respectively made with a 45° bevel (the two ends are made with a 45° bevel) to facilitate insertion and positioning.

[0032] The dimensions of the surface cleaning and shaping tube can be determined according to the design drawings. For example, the length of the surface cleaning and shaping tube 7 is 330mm, the outer diameter is 32mm, and the wall thickness is 2mm.

[0033] Step 3: According to the design drawings, tie the steel reinforcement bars 2 at the V-shaped groove in the filter tank;

[0034] Step 4: Install extruded polystyrene board, template, precast steel sheet, and surface-scanned shaping tube. The specific process is as follows:

[0035] Step 401: Install the bottom frame 5 on the front and rear sides of the bottom of the steel mesh frame 2 along the length of the steel mesh frame 2.

[0036] Step 402: Lay multiple bottom templates 3-1 between the bottom of the steel mesh frame and the top of the frame 5 and connect adjacent bottom templates 3-1 with connecting devices (such as bolts or clamps). The bottom templates 3-1 are in close contact with the top wall of the frame 5.

[0037] Step 403: Place the bottom extruded polystyrene board 4-1 on the bottom template 3-1 and fix the bottom extruded polystyrene board 4-1 and the bottom template 3-1 with nails. Then, make multiple openings on the bottom extruded polystyrene board 4-1 according to the set size and shape for the surface scanning hole shaping tube 7 to pass through, and ensure that the size and shape of the openings meet the design requirements.

[0038] Step 404: Install the lower concrete pad between the bottom extruded polystyrene board 4-1 and the steel mesh 2; then place the upper concrete pad on top of the steel mesh 2 to provide a support benchmark for subsequent formwork construction and avoid the formwork directly pressing the steel bars.

[0039] Step 405: Install multiple precast steel plates 6 on the main reinforcement bars of the steel mesh frame 2 near the bottom extruded polystyrene board 4-1 along the length direction of the steel mesh frame 2. The multiple precast steel plates 6 are continuously arranged along the length direction of the steel mesh frame 2, and the axis of the reserved circular hole of the precast steel plate 6 corresponds one-to-one with the axis of the opening position on the bottom extruded polystyrene board 4-1, with an allowable axis position error of ≤2mm; preferably, the precast steel plates 6 are tied and fixed to the intersection of the main reinforcement bars and transverse reinforcement bars of the steel mesh frame 2 with nylon cable ties 8 to ensure that the precast steel plates 6 are tightly attached to the surface of the steel mesh frame 2.

[0040] In this step, check whether the reserved round hole of the precast steel sheet 6 and the through hole opening on the bottom extruded board 4-1 are aligned on the axis. The allowable error is ≤2mm. If the deviation is large, the binding position of the steel sheet needs to be adjusted to ensure that the subsequent surface cleaning hole shaping tube 7 can be vertically penetrated.

[0041] Step 406: Pass the lower end of the surface cleaning hole shaping tube 7 through the reserved round hole on the precast steel sheet 6 and insert it into the opening of the bottom extruded board 4-1 to form the first point positioning. Then, use nylon cable ties 8 to tie and fix the surface cleaning hole shaping tube 7 to the main reinforcement of the steel mesh frame 2 to constrain the bottom 1 / 3 height of the surface cleaning hole shaping to form the second point positioning and prevent displacement during pouring.

[0042] Step 407: Measure the insertion position of the dial-up perforated shaping tube 7 on the upper extruded polystyrene board 4-2 and make holes at the corresponding positions on the upper extruded polystyrene board 4-2 according to the set size and shape. When making holes on the upper extruded polystyrene board 4-2, refer to the reserved hole position of the bottom steel plate 7 to ensure that the upper and lower openings are vertically aligned and that the size and shape of the openings meet the design requirements. Then, fix the upper template 3-2 and the extruded polystyrene board 4-2 to form a joint. While placing the joint on the upper concrete pad, insert the upper end of the dial-up perforated shaping tube 7 into the corresponding opening position on the upper extruded polystyrene board 4-2 to form a third point positioning. The three-point positioning system is adopted: bottom: lower extruded polystyrene board 4-1 opening + precast steel plate 6; middle: steel mesh 2 binding point; top: upper extruded polystyrene board 4-2 opening. Finally, use connecting devices (such as bolts or clamps) to connect the adjacent upper template 3-2 to complete the construction of the hanging formwork of the upper template 3-2 and the upper extruded polystyrene board 4-2 joint.

[0043] Step 5: Pour and vibrate concrete between the bottom extruded polystyrene board 4-1 and the upper extruded polystyrene board 4-2. The specific process is as follows:

[0044] Step 501: Concrete 1 is poured in layers between the bottom extruded polystyrene board 4-1 and the upper extruded polystyrene board 4-2 using a concrete hoisting method. After pouring, an immersion vibrator is used to compact the concrete 1 to ensure its density, eliminate air bubbles, and promote the concrete 1 to adhere tightly to the bottom extruded polystyrene board 4-1 and the upper extruded polystyrene board 4-2.

[0045] Step 502: After pouring, smooth the surface of concrete 1 with a trowel; then cure the concrete for 14 days. Curing can be done by covering with wet burlap sacks or curing film to maintain the humidity of concrete 1 and prevent moisture evaporation from causing cracks.

[0046] Step Six: After concrete 1 reaches 100% of its design strength, remove the upper formwork, upper extruded polystyrene board, bottom extruded polystyrene board, and both upper and lower formwork. The process is as follows: First, loosen and remove the connecting devices (such as bolts or clamps) that connect the lower formwork 3-1 and the upper formwork 3-2. Then, use tools such as pry bars and hammers to gently pry up the upper formwork 3-2 and the upper extruded polystyrene board 4-2 from the joint. Next, remove the frame 5. Finally, use tools such as pry bars and hammers to gently pry up the bottom formwork 3-1 and the bottom extruded polystyrene board 4-1 from the joint. During the operation, avoid using excessive force to prevent damage to concrete 1.

[0047] By using extruded polystyrene board as the formwork lining, a soft connection is formed between the concrete and the formwork, thus ensuring the integrity of the formwork.

[0048] The embodiments of this utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pre-embedded positioning construction structure for water distribution holes on the surface of a filter bed, characterized in that: The system includes precast steel sheets (6) and surface-scanning hole shaping tubes (7). Multiple pre-reserved round holes are evenly opened on the precast steel sheets, and the distance from the center of each pre-reserved round hole to the wide edge of the precast steel sheet is at least 50 mm. The upper and lower ends of the surface-scanning hole shaping tubes are respectively inclined at 45°. Reinforcing bars (2) are tied to the V-shaped groove in the filter tank. Along the length of the reinforcing bar mesh, bottom frames (5) are installed on the front and rear sides of the bottom of the reinforcing bar mesh. Multiple bottom templates (3-1) are fully laid between the bottom of the reinforcing bar mesh and the top of the frame, and adjacent bottom templates are connected by connecting devices. The bottom templates are in close contact with the top wall of the frame. Bottom extruded polystyrene boards (4-1) are fully laid and fixed on the bottom templates. Multiple openings for the surface-scanning hole shaping tubes to pass through are opened at a set position according to a set size and shape on the bottom extruded polystyrene boards. Lower concrete pads are installed between the bottom extruded polystyrene boards and the reinforcing bar mesh. Upper concrete pads are placed on the top of the reinforcing bar mesh. Multiple precast steel plates are installed on the main reinforcing bars of the steel mesh near the bottom extruded polystyrene board along the length of the steel mesh. The precast steel plates are continuously arranged along the length of the steel mesh, and the axis of the reserved circular hole of the precast steel plate corresponds to the axis of the opening position on the bottom extruded polystyrene board. The lower end of the surface-scanning hole shaping tube passes through the reserved circular hole on the precast steel plate and is inserted into the opening of the bottom extruded polystyrene board to form the first point positioning. The surface-scanning hole shaping tube is tied and fixed to the main reinforcing bar of the steel mesh. The upper template is fixed to the extruded polystyrene board to form a combination. An opening is opened on the upper extruded polystyrene board for the upper part of the surface-scanning hole shaping tube to be inserted. The combination is placed on the upper concrete pad and the upper end of the surface-scanning hole shaping tube is inserted into the corresponding opening on the upper extruded polystyrene board to form the third point positioning. Adjacent upper templates are connected by a connecting device. Concrete is poured between the bottom extruded polystyrene board and the upper extruded polystyrene board.

2. The filter surface cleaning water distribution hole pre-embedded positioning construction structure according to claim 1, characterized in that: The precast steel sheets are tied and fixed to the intersections of the main and transverse reinforcing bars of the steel mesh using nylon cable ties.

3. The pre-embedded positioning construction structure for the filter surface cleaning and water distribution holes according to claim 1 or 2, characterized in that: The second positioning point is formed by binding the main reinforcement of the steel mesh at the bottom 1 / 3 height of the surface-scanned hole.

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